What crop introduced slave trade to virginia

Tobacco did. Farming tobacco raked in a lot of money from England, but needed a lot of work to grow. So the colonists imported slaves to do the planting and harvesting for them

Short Tobacco

the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.